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        </a>
        <div class="span12">
          <h4 id="title">Reprojection with EPSG.io Search</h4>
          <p class="tags">
            <span class="badge-group">
              <a
                href="./index.html?q=reprojection" class="badge badge-info">reprojection</a
              ><a
                class="badge badge-info tag-modal-toggle text-white"
                data-toggle="modal"
                data-target="#tag-example-list"
                data-title="reprojection"
                data-content="
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection-image.html&quot;&gt;Image Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./interpolation.html&quot;&gt;Interpolation&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection-wgs84.html&quot;&gt;OpenStreetMap Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./scaleline-indiana-east.html&quot;&gt;OpenStreetMap Reprojection with ScaleLine Control&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection.html&quot;&gt;Raster Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action active&quot; href=&quot;./reprojection-by-code.html&quot;&gt;Reprojection with EPSG.io Search&lt;/a&gt;"
                tabindex="0"
                >6</a>
            </span>
            <span class="badge-group">
              <a
                href="./index.html?q=projection" class="badge badge-info">projection</a
              ><a
                class="badge badge-info tag-modal-toggle text-white"
                data-toggle="modal"
                data-target="#tag-example-list"
                data-title="projection"
                data-content="
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./wms-custom-proj.html&quot;&gt;Custom Tiled WMS&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection-image.html&quot;&gt;Image Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection-wgs84.html&quot;&gt;OpenStreetMap Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./scaleline-indiana-east.html&quot;&gt;OpenStreetMap Reprojection with ScaleLine Control&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./projection-and-scale.html&quot;&gt;Projection and Scale&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection.html&quot;&gt;Raster Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action active&quot; href=&quot;./reprojection-by-code.html&quot;&gt;Reprojection with EPSG.io Search&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./wms-image-custom-proj.html&quot;&gt;Single Image WMS with Proj4js&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./sphere-mollweide.html&quot;&gt;Sphere Mollweide&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./wms-no-proj.html&quot;&gt;WMS without Projection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./zoomify.html&quot;&gt;Zoomify&lt;/a&gt;"
                tabindex="0"
                >11</a>
            </span>
            <span class="badge-group">
              <a
                href="./index.html?q=proj4js" class="badge badge-info">proj4js</a
              ><a
                class="badge badge-info tag-modal-toggle text-white"
                data-toggle="modal"
                data-target="#tag-example-list"
                data-title="proj4js"
                data-content="
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection-image.html&quot;&gt;Image Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./reprojection.html&quot;&gt;Raster Reprojection&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action active&quot; href=&quot;./reprojection-by-code.html&quot;&gt;Reprojection with EPSG.io Search&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./wms-image-custom-proj.html&quot;&gt;Single Image WMS with Proj4js&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./sphere-mollweide.html&quot;&gt;Sphere Mollweide&lt;/a&gt;"
                tabindex="0"
                >5</a>
            </span>
            <span class="badge-group">
              <a
                href="./index.html?q=epsg.io" class="badge badge-info">epsg.io</a
              ><a
                class="badge badge-info tag-modal-toggle text-white"
                data-toggle="modal"
                data-target="#tag-example-list"
                data-title="epsg.io"
                data-content="
                  &lt;a class=&quot;list-group-item list-group-item-action active&quot; href=&quot;./reprojection-by-code.html&quot;&gt;Reprojection with EPSG.io Search&lt;/a&gt;"
                tabindex="0"
                >1</a>
            </span>
            <span class="badge-group">
              <a
                href="./index.html?q=graticule" class="badge badge-info">graticule</a
              ><a
                class="badge badge-info tag-modal-toggle text-white"
                data-toggle="modal"
                data-target="#tag-example-list"
                data-title="graticule"
                data-content="
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./graticule.html&quot;&gt;Map Graticule&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action active&quot; href=&quot;./reprojection-by-code.html&quot;&gt;Reprojection with EPSG.io Search&lt;/a&gt;
                  &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;./sphere-mollweide.html&quot;&gt;Sphere Mollweide&lt;/a&gt;"
                tabindex="0"
                >3</a>
            </span>
          </p>
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                </div>
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                  <div class="list-group"></div>
                </div>
              </div>
            </div>
          </div>
          <div id="map" class="map"></div>
<form class="form-inline">
  <label for="epsg-query">Search projection:&nbsp</label>
  <input type="text" id="epsg-query" placeholder="4326, 27700, 3031, US National Atlas, Swiss, France, ..." class="form-control" size="50" />
  <button id="epsg-search" class="btn">Search</button>
  <span id="epsg-result"></span>
</form>
<form class="form-inline">
  <label for="render-edges">
    Render reprojection edges:&nbsp;
    <input type="checkbox" id="render-edges" />
  </label>
  &nbsp;&nbsp;&nbsp;&nbsp;
  <label for="show-tiles">
    Show tile coordinates:&nbsp;
    <input type="checkbox" id="show-tiles" />
  </label>
  &nbsp;&nbsp;&nbsp;&nbsp;
  <label for="show-graticule">
    Show graticule:&nbsp;
    <input type="checkbox" id="show-graticule" />
  </label>
</form>

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        <form method="POST" id="codepen-form" target="_blank" action="https://codesandbox.io/api/v1/sandboxes/define">
          <input id="codesandbox-params" type="hidden" name="parameters">
        </form>
      </div>

      <div class="row-fluid">
        <div class="span12">
          <p id="shortdesc">Demonstrates client-side raster reprojection of OSM to arbitrary projection</p>
          <div id="docs"><p>This example shows client-side raster reprojection capabilities from OSM (EPSG:3857) to arbitrary projection by searching in <a href="https://epsg.io/">EPSG.io</a> database.</p>
</div>
        </div>
      </div>

      <div class="row-fluid">
        <h5 class="source-heading">main.js</h5>
        <pre><code id="example-js-source" class="language-js">import 'ol/ol.css';
import Graticule from &#x27;ol/layer/Graticule&#x27;;
import Map from &#x27;ol/Map&#x27;;
import OSM from &#x27;ol/source/OSM&#x27;;
import Stroke from &#x27;ol/style/Stroke&#x27;;
import TileDebug from &#x27;ol/source/TileDebug&#x27;;
import TileLayer from &#x27;ol/layer/Tile&#x27;;
import View from &#x27;ol/View&#x27;;
import proj4 from &#x27;proj4&#x27;;
import {applyTransform} from &#x27;ol/extent&#x27;;
import {get as getProjection, getTransform} from &#x27;ol/proj&#x27;;
import {register} from &#x27;ol/proj/proj4&#x27;;

const osmSource &#x3D; new OSM();

const debugLayer &#x3D; new TileLayer({
  source: new TileDebug({
    tileGrid: osmSource.getTileGrid(),
    projection: osmSource.getProjection(),
  }),
  visible: false,
});

const graticule &#x3D; new Graticule({
  // the style to use for the lines, optional.
  strokeStyle: new Stroke({
    color: &#x27;rgba(255,120,0,0.9)&#x27;,
    width: 2,
    lineDash: [0.5, 4],
  }),
  showLabels: true,
  visible: false,
  wrapX: false,
});

const map &#x3D; new Map({
  layers: [
    new TileLayer({
      source: osmSource,
    }),
    debugLayer,
    graticule,
  ],
  target: &#x27;map&#x27;,
  view: new View({
    projection: &#x27;EPSG:3857&#x27;,
    center: [0, 0],
    zoom: 1,
  }),
});

const queryInput &#x3D; document.getElementById(&#x27;epsg-query&#x27;);
const searchButton &#x3D; document.getElementById(&#x27;epsg-search&#x27;);
const resultSpan &#x3D; document.getElementById(&#x27;epsg-result&#x27;);
const renderEdgesCheckbox &#x3D; document.getElementById(&#x27;render-edges&#x27;);
const showTilesCheckbox &#x3D; document.getElementById(&#x27;show-tiles&#x27;);
const showGraticuleCheckbox &#x3D; document.getElementById(&#x27;show-graticule&#x27;);

function setProjection(code, name, proj4def, bbox) {
  if (code &#x3D;&#x3D;&#x3D; null || name &#x3D;&#x3D;&#x3D; null || proj4def &#x3D;&#x3D;&#x3D; null || bbox &#x3D;&#x3D;&#x3D; null) {
    resultSpan.innerHTML &#x3D; &#x27;Nothing usable found, using EPSG:3857...&#x27;;
    map.setView(
      new View({
        projection: &#x27;EPSG:3857&#x27;,
        center: [0, 0],
        zoom: 1,
      })
    );
    return;
  }

  resultSpan.innerHTML &#x3D; &#x27;(&#x27; + code + &#x27;) &#x27; + name;

  const newProjCode &#x3D; &#x27;EPSG:&#x27; + code;
  proj4.defs(newProjCode, proj4def);
  register(proj4);
  const newProj &#x3D; getProjection(newProjCode);
  const fromLonLat &#x3D; getTransform(&#x27;EPSG:4326&#x27;, newProj);

  let worldExtent &#x3D; [bbox[1], bbox[2], bbox[3], bbox[0]];
  newProj.setWorldExtent(worldExtent);

  // approximate calculation of projection extent,
  // checking if the world extent crosses the dateline
  if (bbox[1] &gt; bbox[3]) {
    worldExtent &#x3D; [bbox[1], bbox[2], bbox[3] + 360, bbox[0]];
  }
  const extent &#x3D; applyTransform(worldExtent, fromLonLat, undefined, 8);
  newProj.setExtent(extent);
  const newView &#x3D; new View({
    projection: newProj,
  });
  map.setView(newView);
  newView.fit(extent);
}

function search(query) {
  resultSpan.innerHTML &#x3D; &#x27;Searching ...&#x27;;
  fetch(&#x27;https://epsg.io/?format&#x3D;json&amp;q&#x3D;&#x27; + query)
    .then(function (response) {
      return response.json();
    })
    .then(function (json) {
      const results &#x3D; json[&#x27;results&#x27;];
      if (results &amp;&amp; results.length &gt; 0) {
        for (let i &#x3D; 0, ii &#x3D; results.length; i &lt; ii; i++) {
          const result &#x3D; results[i];
          if (result) {
            const code &#x3D; result[&#x27;code&#x27;];
            const name &#x3D; result[&#x27;name&#x27;];
            const proj4def &#x3D; result[&#x27;proj4&#x27;];
            const bbox &#x3D; result[&#x27;bbox&#x27;];
            if (
              code &amp;&amp;
              code.length &gt; 0 &amp;&amp;
              proj4def &amp;&amp;
              proj4def.length &gt; 0 &amp;&amp;
              bbox &amp;&amp;
              bbox.length &#x3D;&#x3D; 4
            ) {
              setProjection(code, name, proj4def, bbox);
              return;
            }
          }
        }
      }
      setProjection(null, null, null, null);
    });
}

/**
 * Handle click event.
 * @param {Event} event The event.
 */
searchButton.onclick &#x3D; function (event) {
  search(queryInput.value);
  event.preventDefault();
};

/**
 * Handle checkbox change events.
 */
renderEdgesCheckbox.onchange &#x3D; function () {
  osmSource.setRenderReprojectionEdges(renderEdgesCheckbox.checked);
};
showTilesCheckbox.onchange &#x3D; function () {
  debugLayer.setVisible(showTilesCheckbox.checked);
};
showGraticuleCheckbox.onchange &#x3D; function () {
  graticule.setVisible(showGraticuleCheckbox.checked);
};
</code></pre>
      </div>

      <div class="row-fluid">
        <h5 class="source-heading">index.html</h5>
        <pre><code id="example-html-source" class="language-markup">&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
  &lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;title&gt;Reprojection with EPSG.io Search&lt;/title&gt;
    &lt;!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer --&gt;
    &lt;script src="https://unpkg.com/elm-pep@1.0.6/dist/elm-pep.js"&gt;&lt;/script&gt;
    &lt;!-- The lines below are only needed for old environments like Internet Explorer and Android 4.x --&gt;
    &lt;script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,TextDecoder"&gt;&lt;/script&gt;
    &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/core-js/3.18.3/minified.js"&gt;&lt;/script&gt;
    &lt;style&gt;
      .map {
        width: 100%;
        height:400px;
      }
    &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
    &lt;form class&#x3D;&quot;form-inline&quot;&gt;
      &lt;label for&#x3D;&quot;epsg-query&quot;&gt;Search projection:&amp;nbsp&lt;/label&gt;
      &lt;input type&#x3D;&quot;text&quot; id&#x3D;&quot;epsg-query&quot; placeholder&#x3D;&quot;4326, 27700, 3031, US National Atlas, Swiss, France, ...&quot; class&#x3D;&quot;form-control&quot; size&#x3D;&quot;50&quot; /&gt;
      &lt;button id&#x3D;&quot;epsg-search&quot; class&#x3D;&quot;btn&quot;&gt;Search&lt;/button&gt;
      &lt;span id&#x3D;&quot;epsg-result&quot;&gt;&lt;/span&gt;
    &lt;/form&gt;
    &lt;form class&#x3D;&quot;form-inline&quot;&gt;
      &lt;label for&#x3D;&quot;render-edges&quot;&gt;
        Render reprojection edges:&amp;nbsp;
        &lt;input type&#x3D;&quot;checkbox&quot; id&#x3D;&quot;render-edges&quot; /&gt;
      &lt;/label&gt;
      &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
      &lt;label for&#x3D;&quot;show-tiles&quot;&gt;
        Show tile coordinates:&amp;nbsp;
        &lt;input type&#x3D;&quot;checkbox&quot; id&#x3D;&quot;show-tiles&quot; /&gt;
      &lt;/label&gt;
      &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
      &lt;label for&#x3D;&quot;show-graticule&quot;&gt;
        Show graticule:&amp;nbsp;
        &lt;input type&#x3D;&quot;checkbox&quot; id&#x3D;&quot;show-graticule&quot; /&gt;
      &lt;/label&gt;
    &lt;/form&gt;
    &lt;script src="main.js"&gt;&lt;/script&gt;
  &lt;/body&gt;
&lt;/html&gt;</code></pre>
      </div>

      <div class="row-fluid">
        <h5 class="source-heading">package.json</h5>
        <pre><code id="example-pkg-source" class="language-json">{
  &quot;name&quot;: &quot;reprojection-by-code&quot;,
  &quot;dependencies&quot;: {
    &quot;ol&quot;: &quot;6.13.0&quot;
  },
  &quot;devDependencies&quot;: {
    &quot;parcel&quot;: &quot;^2.0.0&quot;
  },
  &quot;scripts&quot;: {
    &quot;start&quot;: &quot;parcel index.html&quot;,
    &quot;build&quot;: &quot;parcel build --public-url . index.html&quot;
  }
}</code></pre>
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